Merge branch 'master' of https://e.coding.net/g-aazo7488/diamond-inspection/DiamondDetectionClient

Views/UserControl/ViewportData/Helper/VideoHelper.cs

@@ -10,6 +10,7 @@ using System.Windows.Media.Imaging;
 using System.Drawing;
 using System.Windows;
 using BrilliantSightClient.Model.Attributes;
+using BrilliantSightClient.Model.Extension;
 
 namespace BrilliantSightClient.Views.UserControl.ViewportData.Helper;
 
@@ -34,10 +35,10 @@ public class VideoHelper
             }
 
             // Use FFmpeg to create a video from the PNG frames
-            string ffmpegPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ffmpeg.exe"); // Assuming ffmpeg.exe is in the same directory as the application
+            string ffmpegPath = GetFFmpegPath();
-            if (!File.Exists(ffmpegPath))
+            if (ffmpegPath.IsNullOrEmpty())
             {
-                throw new FileNotFoundException("FFmpeg executable not found.", ffmpegPath);
+                throw new FileNotFoundException("FFmpeg executable not found.");
             }
             
             string framePattern = Path.Combine(tempDirectory, "frame_%05d.png").Replace("\\", "/"); // Replace backslashes with forward slashes for FFmpeg compatibility
@@ -101,11 +102,11 @@ public class VideoHelper
             }
 
             // Use FFmpeg to create a video from the PNG frames
-            string ffmpegPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ffmpeg.exe"); // Assuming ffmpeg.exe is in the same directory as the application
+            string ffmpegPath = GetFFmpegPath();
-            if (!File.Exists(ffmpegPath))
+            if (ffmpegPath.IsNullOrEmpty())
             {
                 // throw new FileNotFoundException("", ffmpegPath);
-                MessageBox.Show("FFmpeg executable not found.", ffmpegPath);
+                MessageBox.Show("FFmpeg executable not found.");
             }
 
             string framePattern = Path.Combine(tempDirectory, "frame_%05d.png").Replace("\\", "/"); // Replace backslashes with forward slashes for FFmpeg compatibility
@@ -228,4 +229,27 @@ public class VideoHelper
         encoder.Frames.Add(BitmapFrame.Create(renderTargetBitmap));
         return encoder;
     }
+    
+    /// <summary>
+    /// 多级查找FFmpeg可执行文件路径
+    /// </summary>
+    /// <returns>存在的FFmpeg路径，不存在返回null</returns>
+    private static string GetFFmpegPath()
+    {
+        // 优先检查应用程序基目录
+        string baseDirPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ffmpeg.exe");
+        if (File.Exists(baseDirPath))
+        {
+            return baseDirPath;
+        }
+
+        // 检查系统目录（C:\Windows\System32）
+        string system32Path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), "ffmpeg.exe");
+        if (File.Exists(system32Path))
+        {
+            return system32Path;
+        }
+
+        return string.Empty;
+    }
 }